LaRoche hopes to emerge from a slump that has limited him to just five hits in his last 33 at-bats.
His absence is a blow to the team. Rizzo has been on a power surge with five home runs since Aug. 12. He has 10 hits in his last eight games to sweeten his stat line to .278/.375/.514.
Snider was taken out for a pinch-runner in the third inning after beating out a bunt single.
Santos punched his ticket out with his latest performance. He gave up three runs in 1/3 of an inning and took the loss Sunday.
A massive slump has
Pena has just two hits in his last 20 at-bats. His .374 slugging percentage is at its lowest point since June 28.
Ramirez hit a two-run homer off T.J. House in the fifth inning to give Chicago a 5-4 lead. He then tied the game at 6 with an RBI groundout in the seventh.
Ramirez is batting .303 with a .506 slugging percentage, .832 OPS, three home runs, nine doubles, 12 RBI, 13 runs and one stolen base in 22 August games.